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WO2019144179A1 - Bol de concentrateur centrifuge discontinu - Google Patents

Bol de concentrateur centrifuge discontinu Download PDF

Info

Publication number
WO2019144179A1
WO2019144179A1 PCT/AU2019/000010 AU2019000010W WO2019144179A1 WO 2019144179 A1 WO2019144179 A1 WO 2019144179A1 AU 2019000010 W AU2019000010 W AU 2019000010W WO 2019144179 A1 WO2019144179 A1 WO 2019144179A1
Authority
WO
WIPO (PCT)
Prior art keywords
bowl
segments
segment
insert
outflow port
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/AU2019/000010
Other languages
English (en)
Inventor
Alexander Hamilton Lewis-Gray
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gekko Systems Pty Ltd
Original Assignee
Gekko Systems Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2018900238A external-priority patent/AU2018900238A0/en
Application filed by Gekko Systems Pty Ltd filed Critical Gekko Systems Pty Ltd
Priority to US16/964,986 priority Critical patent/US11944985B2/en
Priority to BR112020014424-0A priority patent/BR112020014424B1/pt
Priority to CA3088698A priority patent/CA3088698A1/fr
Priority to RU2020125779A priority patent/RU2783867C2/ru
Priority to AU2019210697A priority patent/AU2019210697B2/en
Publication of WO2019144179A1 publication Critical patent/WO2019144179A1/fr
Priority to ZA2020/04496A priority patent/ZA202004496B/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/04—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
    • B04B1/08—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/10—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl
    • B04B1/14—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl with periodical discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B15/00—Other accessories for centrifuges
    • B04B15/12—Other accessories for centrifuges for drying or washing the separated solid particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/08—Rotary bowls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/08—Rotary bowls
    • B04B7/12—Inserts, e.g. armouring plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B15/00—Other accessories for centrifuges
    • B04B15/06—Other accessories for centrifuges for cleaning bowls, filters, sieves, inserts, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/08—Rotary bowls
    • B04B7/12—Inserts, e.g. armouring plates
    • B04B7/14—Inserts, e.g. armouring plates for separating walls of conical shape
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • This invention relates to Batch Centrifugal Concentrators, and in particular it relates to the bowl component used therein.
  • BCC Batch Centrifugal Concentrators
  • BCC Batch Centrifugal Concentrators
  • the major component of any BCC is the bowl.
  • the inner sidewall of the bowl is subjected to a very mechanically hostile environment during its operation, and therefore the bowl needs to be robust and durable so that the BCC has a satisfactory operational life between maintenance and refurbishment operations where the equipment is required to be taken out of service. This typically has a significant impact on mine site operational efficiency and profitability.
  • BCCs are large bulky apparatus, with a correspondingly large unitary bowl.
  • the bowl cannot simply be refurbished, and often it needs to be replaced. This poses a significant problem associated with the logistics of getting the components of the BCC from the manufacturer over to the remote site where the apparatus is required to operate. In large BCCs, the bowls can be difficult and expensive to transport to the site.
  • BCCs need to be taken out of service from time to time, to undergo routine maintenance and refurbishment operations. Due to the bulk and the weight of critical components, particularly the bowl, specialised lifting equipment is often necessary to manipulate the various components. On remote sites, this poses additional problems and costs associated with getting the heavy lifting equipment to the site when required. In many cases, sites operate multiple BCCs so that the capacity of the BCC operation is adequate to satisfy the production at the site. Also, multiple BCCs ensure that production can continue if there is an unscheduled maintenance event of any one BCC. However, having multiple BCCs means that the heavy lifting maintenance equipment needs to be relocatable at the site, so that each BCC can be operated upon when required.
  • BCCs operate by creating zones upon the inner sidewall of the bowl that act as localised fluidized bed regions. They do this by injecting a fluid through a plurality of outflow ports strategically located around the periphery of the inner wall of the bowl that are adapted to inject fluid into the bowl.
  • One major problem associated with this is that at least some of the outflow ports often become clogged with debris, as solids from the slurry being operated upon by the BCC are forced out of the slurry and become lodged in some, or all, of the inflow ports, thereby significantly degrading the fluidised bed effect and degrading the performance of the BCC.
  • the present invention is a segmented bowl for a batch centrifugal concentrator constructed from a plurality of segments that are each placed adjacently to one another, so that each segment is in intimate contact with its neighbouring segments, so that when a sufficient number of segments are put into place, they form the bowl of the batch centrifugal concentrator.
  • the segments are arcuate in shape, and when put in place, they combine to form a bowl shape with a circular profile and a suitably sloping interior sidewall.
  • This wall will consist of an interior sidewall profile that is adapted to optimally concentrate precious components from a slurry operated upon by the batch centrifugal concentrator.
  • each different shape of segment is capable of being laid adjacent to each other, and in intimate contact with its neighbouring segments, to form one discrete layer within the formation of the bowl.
  • each discrete layer of segments is in intimate contact with any adjacent layer of segments so that the bowl can be constructed by placing the segments into a plurality of discrete layers.
  • At least some of the individual segments are constructed out of at least two parts.
  • the first part is a rearward part, nearest to the exterior of the bowl and the second part is a forward part, nearest to the interior of the bowl.
  • the rearward part is adapted to permit fastening means to attach to and retain the forward part.
  • the segment is adapted to enable the second part to be detached from the first part and replaced by a new second part if the original second part has become damaged or has otherwise reached the end of its useful life. It also allows for cleaning of the outflow holes and water channels inside of the segment.
  • At least the second part is adapted to be 3D printed so that replacement second parts may be printed when required.
  • At least some of the segments are hollow and include a fluid flow path that allows a suitable fluid, such as water, to flow into the segment via at least one inflow conduit, and at least partially flow out of the segment via at least one outflow port, into the interior of the bowl, even while the bowl is rotating at operational speed.
  • a suitable fluid such as water
  • each segment is capable of being fitted with an insert that overlays at least one outflow port and is adapted to still permit the outflow of the suitable fluid, while mitigating the likelihood of the ingress of any solid material into the outflow port, thereby reducing the chance of the outflow port from becoming clogged.
  • the insert is hinged either at its top or bottom edge and is capable of swinging away from the outflow port, under the influence on the flow of fluid through the outflow port, and when the flow is suspended, the centrifugal forces associated with the rotating bowl cause the insert to swing back to its position overlaying the outflow port, thereby enabling the insert to act as a barrier, thereby preventing material from clogging the at least one outflow port.
  • the insert is manufactured from a suitably resilient and robust material.
  • any suitable resilient material may be used, however the preferred material is rubber.
  • the insert includes a flap portion and a bulbous portion.
  • retaining means that are adapted to retain the bulbous portion of the insert.
  • the retaining means are adapted to enable an insert to be replaced when required.
  • At least some of the segments include additional retaining means that are adapted to retain at least one cover.
  • each cover is manufactured from a suitable hard-wearing material, and when attached to it associated segment via the additional retaining means, it presents a comparatively harder wearing surface to a region of the segment that is subjected to high wear during the normal operation of the batch centrifugal concentrator.
  • the bowl is adapted to be transported to a site in a totally or partially disassembled condition, and then assembled at the site.
  • each segment or at least the forward portion of the segment, is capable of being manufactured on site using a suitable 3D printer.
  • Figure 1 is an isometric view with a cut away portion of one preferred embodiment of the present invention.
  • Figure 2 is an isometric view of an alternative preferred embodiment of the present invention.
  • Figure 3 is a close-up view of one preferred form of the insert in-situ within the segment.
  • Figure 4 is a cut-away side view showing the constructed bowl made up from a plurality of adjacent segments.
  • Figure 5 is an exploded view of another preferred embodiment of the present invention, showing a segment constructed out of a forward and a rearward portion.
  • the segment 1 has an outer sidewall portion 3 and an inner sidewall portion 5.
  • the segment 1 is a unitary design, which could be manufactured in a single piece.
  • the segment 1 is constructed from a plurality of sub-parts.
  • the segment is capable of being produced by 3D printing.
  • the segment 1 is at least partially hollow, and includes a cavity 7.
  • the cavity 7 has an inlet conduit 9, and a plurality of comparatively small outflow ports 1 1.
  • Each segment 1 has an arcuate shape so that when a plurality of segments 1 arc placed adjacent to one another in intimate contact, they combine to form a bowl with a circular profde, and a sloping inner sidewall 5.
  • the bowl is capable of being spun at sufficiently high speed to induce a centripetal force on any material fed into the rotating bowl, while retaining the bowl’s integrity.
  • the outflow of a suitable fluid, typically water, through the plurality of outflow ports 1 1 creates zones within the inner sidewall 5 of the bowl that act as a fluidised bed.
  • the segment 1 includes an additional insert 13 that is removably insertable into the inner sidewall 5 of the segment 1.
  • the additional insert 13 is manufactured from a suitable hard-wearing material, such as a metal, polyurethane or ceramic, and the additional insert thereby provides enhanced wear resistance in regions of the segment that are subjected to high wear.
  • this enhanced wear resistance material may be incorporated into the segment as part of the manufacturing process, for example, in the form of a liquid or paste that cures to form an integrated part of the bowl segment.
  • This insert may either be exposed at the surface or buried below a surface layer of the bowl segment such that it becomes exposed as a result of operational wear.
  • the interface between the high wear resistance material and the main body of the bowl segment can be keyed such that the hard-wearing material will not fall out of the segment during operation.
  • the insert includes a bulbous portion 17 and a flap portion 19.
  • the bulbous portion 17 is capable of being removably inserted into retaining means 21 that are formed in the segment 1.
  • the flap portion 19 overlays the outflow ports 11.
  • the flap portion 19 mitigates the likelihood that solid material will become lodged in some, or all the outflow ports 11, causing them to become clogged.
  • the force of the flow forces the flap to move out of its overlaying position and allow the flow of fluid to proceed.
  • a resilient material is used, that is capable of yielding and resiliently deforming when in use, however it should be noted that other forms of insert are within the scope of the present invention, including a stiff form of insert that is hinged, preferably at the top, and is capable of swinging away from the outflow port under the influence of the outflow of fluid from the outflow ports 11.
  • FIG 4 we are shown a sectional side view of a bowl 23 that has been constructed from a plurality of segments 1.
  • a single segment extends from the bottom to the top of the bowl 23.
  • the segment 1 includes a rearward portion 25 and a forward portion 27.
  • the portions are fastened together via fastening means 31. Any suitable fastening means may be used.
  • a gasket 29 may be used to make a fluid proof seal between to two portions when fully fastened together.
  • Both portions includes a fluid flow channel 7 that complement one another when the two portions are fastened together. In another embodiment, this channel is wholly contained in either the rearward or forward portion.
  • An inflow conduit 9 is included in the rearmost portion and is connected to the fluid flow channel 7. Fluid enters the segment through the inlet conduit 9 and the fluid flows through the fluid flow channel 7 and flows out of the segment through the plurality of outflow ports 11. This creates a fluidised bed arrangement in the vicinity of the outflow ports 11.
  • the rearmost portion 25 is made from a solid durable material, such as steel, whereas the forward portion 27 is made from a different material. Because it is the forward portion 27 that is subjected to wear and tear and the impact loads associated with the operation of the BCC, this embodiment has the advantage that the damaged/worn forward portion 27 can be easily removed from the rearward portion 25 and replaced with a new forward portion 27. It is also optional that at least the forward portion is able to be 3D printed so that a replacement forward portion 27 for that segment is ready when required. This cuts down on inventory considerations, and the logistics involved in handling replacement portions 27.
  • Another advantage associated with the ability to be able separate the forward and rearward portions of the segment from each other is that this also allows for easy cleaning of the water channel 7 and outflow holes 1 1.
  • One of the advantages of the present invention over the prior art is due to the fact that the segments, or the sub-parts of the segments, can be more easily transported to the site where the Batch Centrifugal Concentrator (BCC) will be operated, thereby mitigating the need to transport the large bulky bowl component.
  • BCC Batch Centrifugal Concentrator
  • the manufacture of the segments, or the replacement of broken or worn out segments can be manufactured at the site, using a 3D printer. This cuts down significantly on the time it takes for the part to be ordered, manufactured off-site and transported to the site.
  • Another advantage further relates to maintenance of the BCC.
  • the bowl in the BCC is adapted to be deconstructed in-situ.
  • the bowl is no longer unitary, so therefore the need for heavy lifting equipment to manipulate the bowl into or out of the BCC is significantly reduced.
  • the bow l can be dis-assembled and re-assembled in-situ as required.
  • High wear areas of the segment are able to be protected with high wearing inserts. As these inserts wear out over time, then only the insert may need to be replaced.
  • the problem associated with the clogging of the outflow' ports is mitigated by use of an insert that nominally covers and protects the outflow ports when the flow of fluid from the outflow' port is not flowing.

Landscapes

  • Centrifugal Separators (AREA)
  • Paper (AREA)

Abstract

La présente invention concerne un bol segmenté de concentrateur centrifuge discontinu construit à partir d'une pluralité de segments qui sont indépendamment disposés adjacents les uns aux autres, de sorte que chaque segment soit en contact intime avec ses segments voisins, pour que, lorsqu'un nombre suffisant de segments sont mis en place, ces derniers forment le bol du concentrateur centrifuge discontinu.
PCT/AU2019/000010 2018-01-25 2019-01-25 Bol de concentrateur centrifuge discontinu Ceased WO2019144179A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US16/964,986 US11944985B2 (en) 2018-01-25 2019-01-25 Bowl for a Batch Centrifugal Concentrator
BR112020014424-0A BR112020014424B1 (pt) 2018-01-25 2019-01-25 Tigela para um concentrador centrífugo em lote
CA3088698A CA3088698A1 (fr) 2018-01-25 2019-01-25 Bol de concentrateur centrifuge discontinu
RU2020125779A RU2783867C2 (ru) 2018-01-25 2019-01-25 Барабан для центробежного концентратора с порционной разгрузкой
AU2019210697A AU2019210697B2 (en) 2018-01-25 2019-01-25 A bowl for a batch centrifugal concentrator
ZA2020/04496A ZA202004496B (en) 2018-01-25 2020-07-21 A bowl for a batch centrifugal concentrator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2018900238 2018-01-25
AU2018900238A AU2018900238A0 (en) 2018-01-25 A Bowl

Publications (1)

Publication Number Publication Date
WO2019144179A1 true WO2019144179A1 (fr) 2019-08-01

Family

ID=67394478

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2019/000010 Ceased WO2019144179A1 (fr) 2018-01-25 2019-01-25 Bol de concentrateur centrifuge discontinu

Country Status (5)

Country Link
US (1) US11944985B2 (fr)
AU (1) AU2019210697B2 (fr)
CA (1) CA3088698A1 (fr)
WO (1) WO2019144179A1 (fr)
ZA (1) ZA202004496B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2758961C1 (ru) * 2021-03-19 2021-11-03 Юрий Анатольевич Шелкунов Модульная концентрационная чаша центробежного концентратора и варианты способа ее изготовления
RU2775528C1 (ru) * 2021-09-16 2022-07-04 Юрий Анатольевич Шелкунов Модульная концентрационная чаша и варианты способа ее изготовления
WO2022160010A1 (fr) * 2021-01-29 2022-08-04 Gekko Systems Pty Ltd Concentrateur centrifuge discontinu
WO2023043338A1 (fr) * 2021-09-16 2023-03-23 Юрий Анатольевич ШЕЛКУНОВ Coupelle de concentration modulaire, variantes et procédé de fabrication
US11938489B2 (en) 2019-11-13 2024-03-26 Flsmidth A/S Centrifugal separator having an improved flow and system comprising such a centrifugal separator
US20240299952A1 (en) * 2021-03-19 2024-09-12 Yury Anatolevich SHELKUNOV Embodiments of a modular concentrating bowl for a centrifugal concentrator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3012710A (en) * 1957-10-30 1961-12-12 Westfalia Separator Ag Centrifugal separator having lining of elastomer material
US20060135338A1 (en) * 2004-12-22 2006-06-22 Zonneveld Edwin J W Centrifugal separator with fluid injection openings formed in a separate strip insert
US20110315621A1 (en) * 2008-12-23 2011-12-29 Trevor Heley Decanting centrifuge with plural screen support sections

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2443239C (fr) * 2003-08-01 2005-03-08 Knelson Patents Inc. Separateur centrifuge avec trous d'injection de liquide dans une bande rapportee distincte

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3012710A (en) * 1957-10-30 1961-12-12 Westfalia Separator Ag Centrifugal separator having lining of elastomer material
US20060135338A1 (en) * 2004-12-22 2006-06-22 Zonneveld Edwin J W Centrifugal separator with fluid injection openings formed in a separate strip insert
US20110315621A1 (en) * 2008-12-23 2011-12-29 Trevor Heley Decanting centrifuge with plural screen support sections

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11938489B2 (en) 2019-11-13 2024-03-26 Flsmidth A/S Centrifugal separator having an improved flow and system comprising such a centrifugal separator
WO2022160010A1 (fr) * 2021-01-29 2022-08-04 Gekko Systems Pty Ltd Concentrateur centrifuge discontinu
US20240109079A1 (en) * 2021-01-29 2024-04-04 Gekko Systems Pty Ltd Batch centrifugal concentrator
RU2758961C1 (ru) * 2021-03-19 2021-11-03 Юрий Анатольевич Шелкунов Модульная концентрационная чаша центробежного концентратора и варианты способа ее изготовления
US20240299952A1 (en) * 2021-03-19 2024-09-12 Yury Anatolevich SHELKUNOV Embodiments of a modular concentrating bowl for a centrifugal concentrator
US12465924B2 (en) * 2021-03-19 2025-11-11 Yury Anatolevich SHELKUNOV Embodiments of a modular concentrating bowl for a centrifugal concentrator
RU2775527C1 (ru) * 2021-08-06 2022-07-04 Юрий Анатольевич Шелкунов Модульная концентрационная чаша центробежного концентратора и способ ее изготовления (варианты)
RU2775528C1 (ru) * 2021-09-16 2022-07-04 Юрий Анатольевич Шелкунов Модульная концентрационная чаша и варианты способа ее изготовления
WO2023043338A1 (fr) * 2021-09-16 2023-03-23 Юрий Анатольевич ШЕЛКУНОВ Coupelle de concentration modulaire, variantes et procédé de fabrication
RU2806272C1 (ru) * 2022-08-25 2023-10-30 Юрий Анатольевич Шелкунов Модульная концентрационная чаша центробежного концентратора (варианты)
RU236916U1 (ru) * 2023-12-27 2025-08-28 Общество с ограниченной ответственностью "НПП "СвердлТехноСервис" Износостойкая накладка для центробежного концентратора

Also Published As

Publication number Publication date
AU2019210697A1 (en) 2020-08-13
BR112020014424A2 (pt) 2020-12-01
US11944985B2 (en) 2024-04-02
CA3088698A1 (fr) 2019-08-01
ZA202004496B (en) 2021-07-28
RU2020125779A3 (fr) 2022-03-25
US20210046488A1 (en) 2021-02-18
AU2019210697B2 (en) 2024-12-05
RU2020125779A (ru) 2022-02-25

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